Thanks a lot! That worked for me (though data::dumper does not set @INC correctly, never mind). Still, I wonder, why the examples did not work in the first place! -- View this message in context: http://n2.nabble.com/Perl-Interface-Problem-tp4824386p4826663.html Sent from the RRDtool Users Mailinglist mailing list archive at Nabble.com.